Common Subjunctive Mood

We intend not to learn the Spanish Subjunctive Mood in depth, but only to learn two most common scenarios:

Note that the "Precise English Correspondence" sentence structure in the table above is exactly the English Subjunctive Mood (somebody should do something). In standard English grammar, the object clause following verbs expressing will such as desire/suggest should use the subjunctive mood, which is completely consistent with the logic of Spanish. However, this "desire/suggest + subjunctive clause" expression only exists in very formal English expressions. In daily life, want somebody to do something, which is simple and direct, is generally used. But want is followed by to do, which does not correspond exactly to the Spanish Positive/Negative Request in grammar. In order to align grammatically, we first give the grammatically precise English expression (using should-based subjunctive clause) in the scenario examples below, and then give the daily expression corresponding to this sentence in English — the latter is the precise correspondence of the meaning of these Spanish sentences in English.

Positive Request

Negative Request

The core of the sentences above is the subjunctive conjugation of the verbs in them. Next, we will explain how to perform the subjunctive conjugation of verbs.

Subjunctive Conjugation

Regular Conjugation

The verb conjugation of Subjunctive Mood is to replace the ending -o based on the yo conjugation of Present Indicative according to the following table:

Observing the table above, the ending replacement is summarized as follows:

1. -ir words are merged into the same group as -er words.

2. Yo conjugation is completely merged into the third person singular (i.e., Yo/Él/Ella/Usted are grouped into the same conjugation form).

3. The endings of Subjunctive conjugation and Present Indicative conjugation are swapped: -ar group endings use -er group endings of Present Indicative; -er group endings use -ar group endings of Present Indicative.

Here are some high-frequency regular conjugations.

Emphasize again: The base of Subjunctive conjugation is not the verb infinitive, but the yo conjugation of the verb. The last 5 words in the table above must be replaced based on their yo conjugation to conform to the standard replacement rules.

Boot-verbs: The subjunctive conjugation of boot-verbs also undergoes vowel substitution (stem-change). Some -ir boot-verbs even undergo vowel substitution in nosotros/vosotros conjugation (i.e., vowel substitution scope has exceeded the "boot" area). But we will not introduce it comprehensively here.

Irregular Conjugation

Contains 6 words DISHES: Dar, Ir, Ser, Haber, Estar, Saber

Actually, these 6 "irregular verbs" are not completely irregular. The second row of the table above gives their "special rules", where Estar only implements the "Lock Stress" rule (pinning the stress on the first syllable of the ending), while the other five just use "stunt trick" respectively — replacing the conjugation base with the "Subjunctive Stunt Double" in the second column.